New Z4 initially will come with two naturally aspirated 3.0 liter engines. The first produces 300 hp for the Z4 sDrive35i with 300 lb-ft (406 Nm) of cranking power. The second dials it down to 255 hp with 220 lb-ft (298 Nm) of torque for the Z4 sDrive30i.

The Z4 in plain site for everyone to see.

BMW has premiered the new Z4 at the North American International Auto Show in Detroit. And it promises simply...more, more, more.

Gone is the much celebrated 3.2 liter inline six-cylinder with 343 hp. But BMW claims what replaces the S54B32 engine will be even better.

The latest Z4 will initially come with two naturally aspirated 3.0 liter engines. The first produces 300 hp for the Z4 sDrive35i with 300 lb-ft (406 Nm) of cranking power. The second dials it down to 255 hp with 220 lb-ft (298 Nm) of torque for the Z4 sDrive30i.

The sDrive35i offers an optional 7-speed dual-clutch automatic transmission which will take the Z4 from 0 to 60mph (96km/h) in 5 seconds flat. Standard on both models will be the 6-speed sport automatic.

BMW claims its EfficientDynamics technologies will provide unparalleled efficiency and performance and it's got a novel in the form of a press release detailing all of the bells and whistles that will make this Z4 better than the last one. But just having a look at the LED-highlighted design architecture of the Z4 body is a good start in believing.